The barking of the dog grew louder and it was evident that the animal was following the smugglers toward the house, but Frank could see nobody for a while. Then he made out two or three moving shadows among the fruit trees, but they vanished again as the light sank, and he almost wished that they would spring out from cover and make a rush upon the building. He could imagine them creeping stealthily nearer and nearer, and the strain of the forced inaction became nearly unbearable. He learned that night that it is often a good deal easier to fight than to wait. At last a harsh voice rose from the gloom. "You'll have to get out, Oliver," it said. "Clear out in your sloop with the folks you have with you and we'll let you go. You're mighty lucky in getting the option." "And what about the ranch?" Mr. Oliver asked. "We'll tend to it," another man answered pointedly. "Pitch your guns through the window and come out right now!" "You're wasting time," replied Mr. Oliver, "I'm going to stay." "Then you'll certainly be sorry," some one else broke in. "We've had about enough trouble right along with you and we've come to hand in the bill. You headed us off a good trade, you brought the revenue folks in, and we mean to get even before we leave. Just now we'll be satisfied with your homestead, but that won't be enough after the next shot's fired." It was a grim warning and what made it more impressive to Frank was the fact that he could not see the man who uttered it. So far, the smugglers had only revealed their presence by their voices. The next moment there was a cry of pain or alarm and a rifle flashed. "Kill that blamed dog," somebody ordered with an oath. Then Mr. Oliver called to Harry, who had gone to the window across the room. "Can you see anybody on that side?" he asked. "No," was the answer. "I think they're all in front." Mr. Oliver turned to Jake. "Slip out through the back window with the boys and work around to the stumps. From there you'll have those fellows clear against the light. Wait until the shooting starts--and then do what you can." "Sure!" was the short answer, and Jake crossed the room. Harry had already dropped from the window, and Frank promptly followed him, feeling relieved now that he had something definite to do. Circling around through the fruit trees they reached the first row of stumps, one end of which ran up rather close to the house. As Frank crouched down among the roots of one he saw the smugglers. There were six or seven of them visible along the edge of the trees, though he fancied that there were more of them farther back in the shadows, which grew thinner and then more dense again as the light rose and fell. Still, before the men could reach the house they would have to cross a clear space where the glow was brighter, which they were evidently reluctant to do. Their hesitation was very natural, since they had discovered that their opponent was unusually quicksighted and handy with the rifle.